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BOSTON MARATHON 2023

Yuliya Sheflyand

Bib: 29231•F

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:53
Rank: #20333
Start → 5K
27:53 | 8:58/mi
10K· 6.21 mi
54:57
Rank: #19901 (+432)
5K → 10K
27:04 | 8:43/mi
15K· 9.32 mi
1:21:36
Rank: #19362 (+539)
10K → 15K
26:39 | 8:35/mi
20K· 12.43 mi
1:48:26
Rank: #18924 (+438)
15K → 20K
26:50 | 8:38/mi
Half· 13.11 mi
1:54:18
Rank: #18903 (+21)
20K → Half
5:52 | 8:36/mi
25K· 15.53 mi
2:15:36
Rank: #18735 (+168)
Half → 25K
21:18 | 8:47/mi
30K· 18.64 mi
2:43:33
Rank: #18421 (+314)
25K → 30K
27:57 | 9:00/mi
20M
2:55:41
Rank: #18239 (+182)
30K → 20M
12:08 | 8:56/mi
21M
3:05:02
Rank: #18029 (+210)
20M → 21M
9:21 | 9:21/mi
35K· 21.75 mi
3:11:27
Rank: #17965 (+64)
21M → 35K
6:25 | 8:35/mi
23M
3:22:32
Rank: #17819 (+146)
35K → 23M
11:05 | 8:51/mi
24M
3:31:24
Rank: #17755 (+64)
23M → 24M
8:52 | 8:52/mi
40K· 24.85 mi
3:39:06
Rank: #17711 (+44)
24M → 40K
7:42 | 9:00/mi
25.2M
3:42:12
Rank: #17622 (+89)
40K → 25.2M
3:06 | 8:59/mi
Finish· 26.22 mi
3:50:36
Rank: #17469 (+153)
25.2M → Finish
8:24 | 8:15/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:18
Pace8:43 /mi
2nd Half
Distance13.11 mi
Time1:56:18
Pace8:52 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:5727:538:5827:53
8:58
-
10K
6.21 mi12:13:0154:578:5127:04
8:43
-0:15
15K
9.32 mi12:39:401:21:368:4526:39
8:35
-0:08
20K
12.43 mi13:06:301:48:268:4426:50
8:38
+0:03
Half
13.11 mi13:12:221:54:188:435:52
8:36
-0:02
25K
15.53 mi13:33:402:15:368:4421:18
8:47
+0:11
30K
18.64 mi14:01:372:43:338:4627:57
9:00
+0:13
20M
20.00 mi14:13:452:55:418:4712:08
8:56
-0:04
21M
21.00 mi14:23:063:05:028:499:21
9:21
+0:25
35K
21.75 mi14:29:313:11:278:486:25
8:35
-0:46
23M
23.00 mi14:40:363:22:328:4811:05
8:51
+0:16
24M
24.00 mi14:49:283:31:248:498:52
8:52
+0:01
40K
24.85 mi14:57:103:39:068:497:42
9:00
+0:08
25.2M
25.20 mi15:00:163:42:128:493:06
8:59
-0:01
Finish
26.22 mi15:08:403:50:368:488:24
8:15
-0:44

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

8:15 /mi

Average Pace

8:48 /mi

Slowest Pace

9:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:41:15

96% of race

Time at Steady Pace

9:21

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:48 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:45:5727:538:5827:53
8:58
#20333
10K
6.21 mi12:13:0154:578:5127:04
8:43
#19901
15K
9.32 mi12:39:401:21:368:4526:39
8:35
#19362
20K
12.43 mi13:06:301:48:268:4426:50
8:38
#18924
Half
13.11 mi13:12:221:54:188:435:52
8:36
#18903
25K
15.53 mi13:33:402:15:368:4421:18
8:47
#18735
30K
18.64 mi14:01:372:43:338:4627:57
9:00
#18421
20M
20.00 mi14:13:452:55:418:4712:08
8:56
#18239
21M
21.00 mi14:23:063:05:028:499:21
9:21
#18029
35K
21.75 mi14:29:313:11:278:486:25
8:35
#17965
23M
23.00 mi14:40:363:22:328:4811:05
8:51
#17819
24M
24.00 mi14:49:283:31:248:498:52
8:52
#17755
40K
24.85 mi14:57:103:39:068:497:42
9:00
#17711
25.2M
25.20 mi15:00:163:42:128:493:06
8:59
#17622
Finish
26.22 mi15:08:403:50:368:488:24
8:15
#17469
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi203338012801218307(Top 69%)6678(Top 58%)6678(Top 137%)
10K6.21 mi3.10 mi19901+4327708+3047708+30419492(Top 73%)7381(Top 65%)7381(Top 151%)
15K9.32 mi3.11 mi19362+5397361+3477361+34718307(Top 69%)6678(Top 58%)6678(Top 137%)
20K12.43 mi3.11 mi18924+4387079+2827079+28217729(Top 67%)6359(Top 56%)6359(Top 130%)
Half13.11 mi0.68 mi18903+217066+137066+1318350(Top 69%)6685(Top 59%)6685(Top 137%)
25K15.53 mi2.42 mi18735+1686974+926974+9217879(Top 67%)6501(Top 57%)6501(Top 133%)
30K18.64 mi3.11 mi18421+3146818+1566818+15617158(Top 64%)6165(Top 54%)6165(Top 126%)
20M20.00 mi1.36 mi18239+1826724+946724+9416189(Top 61%)5686(Top 50%)5686(Top 116%)
21M21.00 mi1.00 mi18029+2106608+1166608+11615289(Top 57%)5226(Top 46%)5226(Top 107%)
35K21.75 mi0.75 mi17965+646573+356573+3515780(Top 59%)5575(Top 49%)5575(Top 114%)
23M23.00 mi1.25 mi17819+1466512+616512+6115317(Top 58%)5357(Top 47%)5357(Top 110%)
24M24.00 mi1.00 mi17755+646482+306482+3016617(Top 62%)6147(Top 54%)6147(Top 126%)
40K24.85 mi0.85 mi17711+446462+206462+2016207(Top 61%)5978(Top 52%)5978(Top 122%)
25.2M25.20 mi0.35 mi17622+896425+376425+3712597(Top 47%)4056(Top 36%)4056(Top 83%)
Finish26.22 mi1.02 mi17469+1536344+816344+8113772(Top 52%)4631(Top 41%)4631(Top 95%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21stories
+97ft-345ft

Overall

18307

Females

6678

F18-39

6678

5K→10K

3.1 - 6.2 mi

Top 73%
×5stories
+79ft-138ft

Overall

19492

Females

7381

F18-39

7381

10K→15K

6.2 - 9.3 mi

Top 69%
×3stories
+67ft-78ft

Overall

18307

Females

6678

F18-39

6678

15K→20K

9.3 - 12.4 mi

Top 67%
×5stories
+106ft-86ft

Overall

17729

Females

6359

F18-39

6359

20K→Half

12.4 - 13.1 mi

Top 69%
×2stories
+19ft-37ft

Overall

18350

Females

6685

F18-39

6685

Half→25K

13.1 - 15.5 mi

Top 67%
×4stories
+66ft-88ft

Overall

17879

Females

6501

F18-39

6501

25K→30K

15.5 - 18.6 mi

Top 64%
×9stories
+181ft-148ft

Overall

17158

Females

6165

F18-39

6165

30K→20M

18.6 - 20.0 mi

Top 61%
×5stories
+64ft-50ft

Overall

16189

Females

5686

F18-39

5686

20M→21M

20.0 - 21.0 mi

Top 57%
×8stories
+106ft-24ft

Overall

15289

Females

5226

F18-39

5226

21M→35K

21.0 - 21.8 mi

Top 59%
×7stories
+17ft-86ft

Overall

15780

Females

5575

F18-39

5575

35K→23M

21.8 - 23.0 mi

Top 58%
×5stories
+23ft-63ft

Overall

15317

Females

5357

F18-39

5357

23M→24M

23.0 - 24.0 mi

Top 62%
×6stories
+12ft-82ft

Overall

16617

Females

6147

F18-39

6147

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

16207

Females

5978

F18-39

5978

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12597

Females

4056

F18-39

4056

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2stories
+22ft-21ft

Overall

13772

Females

4631

F18-39

4631

Passing Analysis

Category:
Athletes Passed
3314
Passed By
450
Net Change
+2864
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20333
5K → 10K591159+432#20333#19901
10K → 15K57031+539#19901#19362
15K → 20K45921+438#19362#18924
20K → Half4625+21#18924#18903
Half → 25K20234+168#18903#18735
25K → 30K35844+314#18735#18421
30K → 20M19513+182#18421#18239
20M → 21M22111+210#18239#18029
21M → 35K7814+64#18029#17965
35K → 23M16822+146#17965#17819
23M → 24M10036+64#17819#17755
24M → 40K7935+44#17755#17711
40K → 25.2M890+89#17711#17622
25.2M → Finish1585+153#17622#17469
TOTALS3314450+2864
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing